PDF malware analysis — malicious · 6113b96f5e112d5a

MALICIOUS

PDF

77.2 KB Created: 2021-09-10 16:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23

MD5: 4935b4a94f655aad47a7ec71399ea1fa SHA-1: ec6ff4d61ece1ed19661e9140c9b6bbdf544942b SHA-256: 6113b96f5e112d5a740573f5d3c1fe3f939182de1f9e2ae070f7fc2da6c8529f

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript, indicating an attempt to execute malicious code. The presence of numerous external URIs, including a link farm on disposable hosting, suggests a phishing or redirection scheme to deliver a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9973

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://abyss.sk/userfiles/file/nagibidozolakok.pdf In PDF document text
- http://andrelandberg.com/userfiles/file/bizimupufogexizesabuporif.pdfIn PDF document text
- https://tvsporedi.si/vsebina/45889934670.pdfIn PDF document text
- http://www.ks-klinika.ru/ckfinder/userfiles/files/rufepuzenigesijo.pdfIn PDF document text
- http://ugrctrani.it/userfiles/files/padavoxilewok.pdfIn PDF document text
- https://drishtinetcom.in/FCKeditor/file/zetufewenuzenov.pdfIn PDF document text
- https://unifor975.ca/userfiles/file/solurizozumux.pdfIn PDF document text
- http://alessandrobelleseveterinario.eu/userfiles/files/3695173082.pdfIn PDF document text
- http://mikomisushi.com/uploads/files/48730187843.pdfIn PDF document text
- https://ccskin.com/geektic/files/72108087104.pdfIn PDF document text
- http://orderkai.com/uploads/files/66615369854.pdfIn PDF document text
- https://samsungklimamodelleri.com/upload/ckfinder/files/refovunomuxesi.pdfIn PDF document text
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138f04b2bb52---munakunaxizo.pdfIn PDF document text
- http://npcbalkan.net/ckeditor/ckfinder/userfiles/files/37607737473.pdfIn PDF document text
- http://ufcnagykanizsa.hu/userfiles/file/29683727147.pdfIn PDF document text
- http://eptesteplelek.com/uploads/file/gumapaduno.pdfIn PDF document text
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/720dc45d31c549a3b0044d8c0b398f55/bufipe.pdfIn PDF document text
- http://www.dagmarsvendova.cz/admin/js/ckfinder/userfiles/files/juwusajagigatopa.pdfIn PDF document text
- http://salman-group.com/userfiles/file/pajolomumezugamemawami.pdfIn PDF document text
- http://obchodsezlatem.cz/upload/files/vavovazex.pdfIn PDF document text
- http://yenidenyuzlendirme.com/ckfinder/userfiles/files/depanenaxozavilekavodum.pdfIn PDF document text
- https://zhbiotech.com/CKEdit/upload/files/99744151863.pdfIn PDF document text
- https://www.potravinyav21.cz/ckfinder/userfiles/files/turulujonuriwomalibozi.pdfIn PDF document text
- http://vandervalk.reviews/app/webroot/files/userfiles/files/mipiwunu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=minecraft+java+in+mobilePDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cadf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCADF	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e2f1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2F1	16920 bytes
SHA-256: `55dcd0c0381ef80b5a3dfbd82e896a7a643b0ec4e93e070f2328d837931464f6`
`font_02_sfnt_off00010e92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E92	10656 bytes
SHA-256: `321d22ea847fc9ce162d0e7f2d15856d688897c9a85254c2ef4860142aedfb3a`

Open this report in the interactive analyzer, or submit your own file for analysis.